package cn.com.yang.egg.graphic2d;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;

public class DrawComponent extends Component {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private static final int DEFAULT_WIDTH = 400;
	private static final int DEFAULT_HEIGHT = 400;
 
	public void paintComponent(Graphics g)
	{
		Graphics2D g2 = (Graphics2D) g;
		//draw a rectangle
		double leftX = 100;
		double topY = 100;
		double width = 200;	
		double height = 150;
 
		Rectangle2D rect = new Rectangle2D.Double(leftX,topY,width,height);
		g2.draw(rect);
 
		//draw the enclosed ellipse
		Ellipse2D ellipse = new Ellipse2D.Double();
		ellipse.setFrame(rect);
		g2.draw(ellipse);
 
		//draw a diagonal line
		g2.draw(new Line2D.Double(leftX,topY,leftX+width,topY+height));
 
		//draw a circle with the same center
		double centerX = rect.getCenterX();
		double centerY = rect.getCenterY();
		double radius = 150;
 
		Ellipse2D circle = new Ellipse2D.Double();
		circle.setFrameFromCenter(centerX,centerY,centerX+radius,centerY+radius);
		g2.draw(circle);
	}
	public Dimension getPreferredSize()
	{
		return new Dimension(DEFAULT_WIDTH,DEFAULT_HEIGHT);
	}
}
